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FRANCOIS CHARLES ZAPFLE, OF NEW YORK; N. Y.

iMPROVEMENT IN FIRE-EXTENGUISHING COMPCUNDS,

Specification forming part of Letters Patent N 0. 182,508, dated September 19, 1876; application filed August 22, 1876. d

To all whom it may concern Be itknown that I, FRANCOIS CHARLES ZAPFLE, of the city of New York and State of New York, have invented a new and useful Compound called Zaptle Fire-Extinguish ing Compound, which compound is fully described in the following specification:

This invention relates to that class of compounds used to extinguish tires of every nature; and it consists in a composition formed by mixing the following ingredients: Hydrochloric acid, (pure gaseous;) chloride of barium-5 carbonate of lime; crystallized alum, with potassa base; water.

To prepare the fire-extinguishing compound. take forty parts hydrochloric acid ten parts chloride of barium; twenty-eight parts carbonate of lime; five parts crystallized alum, with potassa base seventeen parts water. Areonietric degree, 55 Bauni.

Mode of preparation.- In a large vat, or other receptacle of stone or pottery ware,pour the hydrochloric acid at 20 Ba-urne, which is to be purified by the addition of the chloride of barium at 90 Bunnie,- This results in eliminating the sulphuric acid found in the hydrochloric acid. Next pour in the carbonate of lime in sui'licient quantity to neutralize the compound. At this stage draw oil" the preparation lhus lu'r formed, excludingthe precipitated barium sulphate which renmins in the bottom 02' the rat, and add thereto the crystallized alum, with potassa base, which tree-l y dissolves in the preparation. The compound is then perfect, and ready to be drawn from the rat or receptacle and put into marketable packages for use,

.l d1; not desire to limit myself to the prec se manner ot' preparation, or to the exact proportion of ingredients herein set forth, as it is evident that any other of the welldincwn chemical ways of preparing the calcium. chlo- :ide Ezmy be npioved, and the proportions varied, arcordin t the nature of the burning matcrsal against i to be thrown.

Mode cl illjpli ltlnui i the extingnishment oi fires and coating ens, and eti'ect: The

compound is placed in the proportions hereinafter specified in either a fire-engine or extinguishing apparatus, and produces the following efi'ect upon the burning mass: First, the freeing of hydrochloric-acid gas in sufficient quantity to smother the flames and to prevent the spread of the tire; second, the relative incoinbustibility which those parts'of the burning mass acquire upon which the extinguishing acid has been brought in contact.

This compound is as easily applied as it is efficacious in subduing and extinguishing fires and conliagrations. All that is necessary is to pour the extinguishing acid into the fireengiue or into the extinguishing apparatus employed in the proportion of about twenty pounds oft-his solution to twenty-five gallons of water.

The strength of the solution may be increased, in order to obtain a greater result, whenever fires are to be dealt with of very combustible substances, such as oil, tar, tallow, p

This compound can be preserved l'or an indefinite time in. a liquid state. It is non-coin busiibie, min-explosive, harmless, and safe for transpcrtation. It will not deteriorate in quality, nor soil nor corrode the engineor apparatus wherein used. it can be used from the engine through hose in the same manner as ordinary water, and handled likewise.

l claim to bc'the sole inventor of the abovedescribed lireextinguishing compound, in use now in irrrmee, and for which I have received and hold French Letters Patent No. 102,282, issued to me for the compound on the 18th day of February, 1874.

\Vhat i claim is-- The herein-described fire-extinguishingcompound, consisting of a mixture of calcium chloride, alum, havin a potash base, and water, substantially as herein set forth.

New York, August 2], 1876.

' FRANCOIS CHARLES ZAPFLl l.

Witnesses:

J. H. STAATS, J H, LUcKHAm). 

